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Thread: loss of boost [supercharged]

  1. 25-09-2009, 07:14 AM #1
    Jordo2
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    Default loss of boost [supercharged]

    gday, does anyone have any suggestions as to why my top mount supercharged L27 3.8 has lost 2lb of boost seemingly overnight? was running 8psi orig, also dropped a full sec to 100kmh? car runs and drives normally otherwise. cheers.
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  2. 25-09-2009, 07:44 AM #2
    immortality's Avatar
    immortality
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    slipping belt?
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  3. 25-09-2009, 08:12 AM #3
    Jordo2
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    Quote Originally Posted by immortality View Post
    slipping belt?
    doesnt seem to be, feels tight, isnt making noise. can they slip without making noise?
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  4. 25-09-2009, 03:42 PM #4
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    Quote Originally Posted by Jordo2 View Post
    doesnt seem to be, feels tight, isnt making noise. can they slip without making noise?
    boost leaking out of the inlet manifold? try some carby cleaner round the joins, if the rev's pick up then you've got a leak
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